Interlocking-endless-chain corrugating mechanism.



W. SJAMIDON.

INTERLOCKING ENDLESS CHAIN CORRUGATING MECHANISM.

APPLICATION FILED SEPT-1|. I9l6".

Patented Feb. 4, 1919.

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WILLIAM S. AMIDQN, 0F MILWAUKEE, WISCONSIN.

INTERLOCKING-ENDLESS-CHAIN CORRUGATING- MECHANISM.

To all whom it may concern:

Be it known thatI, WILIJAM'SAMIDON, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee andState of Wisconsin, have invented certain new and useful Improvements in Interlocking-Endless-Chain Corrugating Mechanism; andI do hereby declare that the following is a full, clear, and exact description thereof.

My invention has for its object to provide a simple, durable and effective means for forming corrugated sheets especially from fiber board or the like. Withthis in view the invention contemplates the employment of synchronously driven interlocking endless chains having companion parallel stretches forming mold throats, one set of the sustaining sheaves of the chains being adapted to form a feed mouth to the throat whereby the sheets of material are pro essively formed into the desired corrugatlons. I am aware of the fact that various types of chains have been employed for corrugating paper board or the llke, such, for instance, as is disclosed in the patent to G. Thiebaut, No. 990080, issued April 18, 1911. Chains of this general type having abrupt projections thereon are impractical for the use to which I especially desire to apply'my structure, that is in the corrugation of wood veneer of the ordinary standard type. This veneer is extremely delicate to handle in forming corrugations due to its peculiar nature and the essential feature therefore in my invention is to provide the endless chains with spurs of a peculiar nature whereby the board is not subjected toa breaking strain when subjected'to a corrugating operation.

In order to. effect the desired-results the chains are provided with interlocking spurs or strips, the neck portions of which spurs terminate with enlarged curved heads. The heads of the spurs. of companion parallel stretches of the chains are thus interlockingly meshed to form the desired corrugation and as the chain stretches slowly travel from the feed end to the discharge end the corrugation which has been effected is held 1 in the desired shape by the spurs a sufficient time to permit the corrugations to firmly With the above objects in view the invention consists in certain peculiarities of con- Specification of Letters Patent.

' portions length. The spurs. are

Patented Feb. 4i, 19119).

Application filed September 11, 1916. Serial No. 119,427

1 detail the construction of one of the molding spurs, and Fig. 3, a detailed cross-section through the same, the sections being indicated respectively by lines 2-2 and 3-3 of Figs. 1 and 2. i

eferring by characters to the drawings, 1 represents an upper toothed sheave and 2 alower toothed sheave, each of the same being mounted upon a suitable shaft, it being understood that these shafts carry the pairs suitably spaced sheaves in companion apart. An endless companion air of chains 3 of-any standard type, embo ying a series of links, are mounted upon the upper set of sheaves and a corresponding pair of chains 4 are mounted upon the lower set of sheaves 2, said lower chain being suitably supported upon a track 5.

cross-section through a As shown in the exemplification of my in- I vention, with especial reference to Figs. 2 and "3, each chain link is provided with a foot 6 terminating in a socket 6. The companion sets of the foot,sockets are adapted to receive the ends of metallic strips 7 which strips constitute spurs. held'in place by oppositely extended wing 8 that engage the under side of the These spurs are sockets 6 and longitudinal ribs 8 that are formed in the body of the strips 7, the said ribs being arranged to engage the upper faces of the sockets. Thus the spurs are rigidly fastened to the chain links and owing to the rib formation mentioned, rigid ity is added to them with respect to their formed with flat neck portions 7 which terminate in curved enlarged heads 7 as shown, it being manifest that in pgcticethe spurs are formed from sheet metal folded uponitself to add ri 'dity to the structure, while at the same time the weight of the chains, by this construction, is reduced to. a minim The portion of the corrugating machine shown in Fig. 1 is what. might be termed the feed end or mouth of the machine and it is understood that the discharge end is simicorrugations of key hole slot-formation,

larly arranged, the only variation between the support of the upper and lower sets of chains being that the upper set is trained upon four rollers, not shown, while the lower set is trained upon two only.

Referring to the mouth end of the machine, as indicated by w, the sheet 3 of material to be corrugated, is fed therein by any suitable means and as the spurs travel about the sheaves, they assume a radial position with respect to their axes.- first operate upon the material, said material receives only a gradual draw and-as the spurs assume their parallel interlocking po sition the corrugation is completed and held in this completed state until such time as the material becomes firmly set. Attention is directed to the fact thatthe rounded heads and elongated necks of the spurs in parallel interlocking positions form oppositely disposed corrugations which are to some extent in alternating keyhole formation and the rounded or curved heads fix the material absolutely in its proper corrugated form without liability of breakage. It is also manifest that, although the parallel working stretches of the chains efiect an interlocking engagement with the spurs, said spurs will open up as they revolve over the discharge end sheaves from such interlocked positions and the material will be thus discharged from the throat.

I claim:

1. "A pair of synchronously driven endless chains for the purpose specified having parallel stretches forming mold throats and comprising a series of links provided with rigid spurs extending therefrom having neck portions extending from the links and terminating with enlarged heads, the companion sets of spur heads being adapted to lie in difierent parallel planes within the interstices formed by the necks, whereby the intermeshed spurs are interlocked during their travel upon the working stretch of said chains to form the material into aseries of and a supporting track for the lower of said chains substantially as described. a

2. In a machine of thetype described, the combination with upper and lower pairs of sprocket sheaves, of. endless Hence when they to free themselves chains trained thereabout brackets carried by and extending inwardly from the chains and provided with sockets, and spur strips having their end portions securedin companion pairs of sockets.

3. In a machine combination with sprocket sheaves, thereabout, brackets carried by and extending inwardly from the chains and provided with socket slots at their ends, spur strips each formed of a sheet of metal bent longitudinally upon itself and having itsend porf the type described, the upper and lower pairs of tions engaged in said socket slots, longitudinal reinforcing ribs bent from the, sides of the plate and engaging the brackets to limit movement of the plate therein in one direction, and spurs bent laterally from the plate and engaging opposite portions of the bracket. g

4:. In a machine of the type described, the combination with drums, of endless chains traveling thereon and comprising a series ofpivotally connected links,

brackets carried by said links, and spurs carried by said brackets, said spurs each folding upon itself a metallic sheet.

5. In a machine of the type described, the combination with drums, of endless chains traveling thereon and comprising-a series of pivotally connected links, by said links, spurs carried each spur being formed by self a metallic sheet, an enlargement formed by said brackets,

of the bend of each spur, and reinforcing,

ribs intermediate the ends of said spurs.

6. In a machine of the type described, the combination with drums, of endless chains traveling thereon and comprising a series of pivotally connected links, brackets carried by said links, spurs carried by said brackets,

each spur being formed by folding upon itself a metallic sheet, an enlargement formed of the bend of each spur, and reinforcing ribs intermediate the ends of said spurs, said reinforcing ribs being formed by folding the sides of the spurs upon themselves.

In testimony that I claim the foregomg I have hereunto set my hand at Milwaukee, in

the county of Milwaukee'and State of Wisconsin.

WILLIAM s.

being formed by I of endless chains trained brackets carried folding upon irall 

